Antirattler brake-shoe.



J. cook. -ANIBATTLEH BRAKE SHOE. APPLICATION FILED S`EPT.26. 1918.

Patented J an. 7, 1919.

i Non.

v JUDSON COOK, 0F ALBANY, yNEW' YORK.

` `ANTIK,ATT,lILllR BRAKE-SHOE.

`specification of Letters Patent.

Patented aan. a, rois.

Application led September 26, y1918. 4Serial No. 255,807.

oval'l whom -z'tfmay concern:

VVBel it ,known that LIJUDsoN. Coon, a citizen of theUnited States, residing 'at Albany, in the county of Albany and State of New York, have inventedcertain new and .useful Im rovements inAntirattler Brake-Slices, of-which the following is a specification.

This invention is an anti-rattler brake shoe, the object `being to .provide...\an improved form of'backing plate and. novel locking plate to firmly fasten the key, whereby `the bra-ke shoe may be Vsecured to the` brake head.

The invention comprises a locking plate of novel form which is provided with clamping lugs to engage a novel form of backing plate. The backing plate ris provided with a perforated centrally positioned key-lug, the upper face of which is directed downwardly toward an upwardly directed portion of the locking plate, .whereby when the locking plate and backing plate are assembled on the shoe, the said downwardly and upwardly directed portions of said plates will rmly and frictionally engage a locking key when passed through the perforations of the key-lug and thereby ret-ain the locking key in position.

Other features of novelty will become apparent from the following detailed description of the invention, taken in connection with the accompanying drawing, wherein one embodiment of the invention is illustrated.

Figure l is a longitudinal sectional view through the shoe illustrating the invention assembled.

Fig. 2 is a longitudinal sectional view of the backing plate.

Fig. 3 is a top plan view of the backing plate.

Fig. 4 is a longitudinal sectional View .of the locking plate.

Fig. 5 is a top plan view of the locking plate.

Fig. 6 is a sectional view on the line 61-6 of Fig. 4 of a winged end of the locking plate.

The shoe,- l, may be of any approved form and material, havin the usual tread T, and may be provided wit the key bearing lugs 2.

The backing plate 3 may be of resilient material and is shown curved throughout its length. This plate is provided with slots 4, 4, and with a centrally positioned uptral `portion 9 may seat upon a protuberance 10 standing portion 5, forming-a securing lug, provided with perforations 6 in the side walls lof the portion .5. The top wall o `of this portion 5 is preferably depressed and curved :as at 7, the curved section being shown las vconcavo-convex in form. `This backingplate 3 is preferably anchored to the shoe between the bearing lugs 2, 2 in any suitable. manner.

Theflocking plate 8 is also shown as curved longitudinally with a conveX-concavo ceny positioned bearing portion 9, which of the shoe 1. The lookin plate 8 is shown provided with winged ends formed by the lugs 11 bent upwardly from the plane of the body of the plate 8. Four of these lugs are shown. These lugs 11 are passed through the slots 4 of backing plate 3 and thence positioned to ride upon, or have slidable engagement with, a section 12 of the backing plate 3, adjacent the slots 4, the lugs l1 being positioned a suitable distance from the substantially vertical walls containing the perforations 6 to prevent the lugs from COIIllIl (not s own) when the device is thus assembled. Furthermore, the ends of the plate 8 may be notched as at 13.

The locking plate 8 may be suitably anchored on the shoe 1 with its winged lugs 1l engaging the backing plate 3 to maintain them in coperative relation. When it is desired to secure the brake shoe to the brake head, a locking key 14 is employed. This key 14 may be of flexible material and is shown curved and tapered throughout its length, terminating with the usual lug 15 at one end. The key 14 bears upon the lugs 2 and is passed through suitable portions of the break-head (not shown) and through the securing luof or upstanding portion 5 of plate 3, witli the central part of the key 14 clamped between the depending arcuate portion 7 of plate 3 and the upstanding arcuate portion 9 of plate 8.

It is obvious that various changes in the form and proportion of parts may be made without departing from the spirit of the invention, and the right is reserved to make such changes as fairly fall within the scope of the appended claims.

Having thus described the invention, what is claimed as new is:

1. A brake shoe having a body, a backing plate secured thereto, a locking plate, and a into contact with the brake-head locking key; the backing plate being provided with a centrally posltioned upstanding portion having perforated side Walls and a concavo-convex top Wall, and provided with slots adjacent the upstanding portion, the locking plate having a conVex-concavo central portion to cooperate With the conoavo-convex Wall of the backing plate in frictionally engaging an interposed locking key, the locking plate having Winged ends which enter through and ride upon the backing plate adjacent the slots to retain the locking and backing plates in coperate relation.

2. In a brake shoe, a backing plate having an upstandingperforated section forming a securing lug for a locking key When passed through the perforated section, said backing plate having slots formed on each side of the securing lug7 a locking plate engaging the lower face or' the backing plate to be positioned between said late and the brake shoe, said locking plate eing provided With a plurality of lugs arranged in pairs and positioned on a plane different from that of the body of the plate, said lugs being passed through and riding upon an upper surface of the backing plate adjacent said slots, and means to rictionally engage a locking key when passed through the securing lug of the looking plate, said means comprising coperating sections of the backing plate and the locking plate.

In testimony whereof I aiiix my signature in the presence of two Witnesses.

, f v JUDSON COOK. Witnesses:

MARGARET M. WADDELL, VMABEL C. CANTWELL.

Copies of this patent may 'be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. C. 

